The disk is busy. Cyclically reads sda and writes to sdb

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grabbee2018-02-04 14:14:24

Iron

grabbee, 2018-02-04 14:14:24

The disk is busy. Cyclically reads sda and writes to sdb - how to find the reason?

Server on onlinenet Standard installation, two hard drives. I install from their image ubuntu server 16.04 64bit
After installation, the disks are busy reading from one HDD and writing to the second - the disk subsystem is 100% busy for many hours. It was not possible to calculate exactly how long this takes. It seems to pass in 5-6 hours, but this is not accurate.
I still can't find the reason. The support checks the HDD in recovery mode - and says that everything is fine with the disks ... They do not go to the server itself after installing the OS - they ignore the problem for the second day. Has anyone experienced or knows the cause?

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2 answer(s)

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Melkij, 2018-02-04
@grabbee

Obviously and elementary. Let the raid do its job.
Nuts for controlling the speed of synchronization: /proc/sys/dev/raid/speed_limit_min and /proc/sys/dev/raid/speed_limit_max

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Puma Thailand, 2018-02-04
@opium

If you use a soft raid, then it is built immediately after installation